Steam injection profile control agent and process

Patent · Tue Apr 14 04:00:00 EDT 1992

OSTI ID:5152776

Shu, P

This patent describes a method for controlling a formation's profile where temperatures higher than 400 degrees F. are encountered in a substantially silica or sand containing formation, it comprises: injecting an aqueous solution of an alkali metal silicate into a zone of higher permeability; injecting a solvent solution containing a calcium salt in an amount sufficient to react with the alkali metal silicate as the solvent solution flows a front evenly through the zone thereby forming a calcium silicate cement which binds silica containing particles in the zone while decreasing the permeability of the zone and retaining a desired permeability of the higher permeability zone; and initiating a thermal oil recovery method in a zone of lesser permeability within the formation and removing hydrocarbonaceous fluids therefrom where the recovery method causes the formation to be heated to a temperature in excess of about 400 degrees F.

• Assignee: Mobil Oil Corp., Fairfax, VA (United States)
• Patent Number(s): A; US 5103907
• Application Number: PPN: US 7-622588
• OSTI ID: 5152776
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200 -- Petroleum-- Reserves
Geology
& Exploration
020300* -- Petroleum-- Drilling & Production
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ALKALI METALS
AQUEOUS SOLUTIONS
CHEMICAL REACTION KINETICS
CONTROL
DISPERSIONS
ELEMENTS
ENHANCED RECOVERY
FLUID INJECTION
INJECTION WELLS
KINETICS
METALS
MIXTURES
OIL WELLS
OXYGEN COMPOUNDS
PERMEABILITY
PROCESS CONTROL
REACTION KINETICS
RESERVOIR ROCK
ROCK-FLUID INTERACTIONS
SAND
SILICATES
SILICON COMPOUNDS
SOLUTIONS
STEAM INJECTION
STIMULATION
TEMPERATURE EFFECTS
WELL STIMULATION
WELLS